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基于Tb的金属有机框架参考光试验,以区分化与其异构体,并随后对Cu2进行定量视觉检测

Hong Yu¹, Shuyi Liu¹, Jiatong Fan¹

¹Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China.

Analytical chemistry

|January 14, 2025

概括

一种使用基于terbium的金属有机框架 (Tb-MOF) 和化 (HQ) 的新型比度光纳米探针允许选择性检测HQ和视觉确定水中的铜离子 (Cu2+).

科学领域:

环境科学环境科学
分析化学分析化学
材料科学材料科学材料科学

背景情况:

化 (HQ) 和铜离子 (Cu2+) 是重要的环境污染物.
在水中检测HQ和Cu2+的选择性和方便的方法至关重要.
区分HQ与其同位素,复合素 (RC) 和甲基醇 (CC),是一个挑战.

研究的目的:

为选择性HQ检测和视觉Cu²⁺确定开发一个比度光纳米探针.
使用光特性将HQ与其同位素 (RC,CC) 区分开来.
为了使环境污染物在现场进行视觉感应.

主要方法:

用基 (HQ) 组装一个基于的金属有机框架 (Tb-MOF).
使用HQ的本地蓝色发射 (338nm) 作为响应信号,并使用Tb-MOF的绿色发射 (545nm) 作为参考信号.
使用光强度比 (F₃₃₈/F₅₄₅) 进行定量分析,并观察颜色变化以进行视觉检测.

主要成果:

开发的纳米探针可以根据光发射选择性地区分HQ与RC和CC.
HQ和Cu2+之间的还氧反应导致HQ的光灭,导致视觉颜色从蓝绿色变为绿色.
使用智能手机,通过低检测极限1.67μM实现了对Cu2+的敏感视觉检测,证明了令人满意的恢复和可重复性.

结论:

基于Tb-MOF和HQ的比度光纳米探针提供了一个选择性和敏感的平台来检测HQ和Cu2+.
这种方法可以在现场对环境水样进行视觉监测.
开发的传感策略对实际环境污染评估具有前景.

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